<!--每一项任务的html模板-->
<div class="li">
    <img width="100px" src="../img/sand.png" alt="项目图片预览">
    项目:<b class="title">{{:title}}</b>
    <span class="proj_state"><b>项目状态</b></span><span>{{:data}}</span>
    <span class="price"><b>价格:</span></b><span>￥{{:price}}</span><button class="btn btn-success">我要接单</button>
    <p>技能要求:{{:skill}}</p> 
</div>